Linked Life Data

3881268

Source:http://linkedlifedata.com/resource/pubmed/id/3881268

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pubmed-article:3881268pubmed:abstractTextAmastigotes of Trypanosoma cruzi, within vertebrate cells or isolated from the supernatant of vertebrate cell cultures (L-A9 fibroblast or J774G8 macrophage-like cell lines), possess glycoproteins or glycolipids on the cell surface according to the periodic acid-thiosemicarbazide-silver proteinate technique used in association with electron microscopy. The cell surface of isolated amastigotes is negatively charged, as evaluated by the binding of cationic particles (colloidal iron hydroxyde at pH 1.8 and cationized ferritin at pH 7.2) as well as by direct measurement of cellular electrophoretic mobility. Amastigotes (Y strain) isolated from the spleen of infected mice and amastigotes (Y and CL strains) from the supernatant of cell cultures previously infected with T. cruzi have the same mean electrophoretic mobility (-0.85 micron sec-1 V-1 cm). It is intermediate between the epimastigote and the trypomastigote forms (determined previously). Sialic acid is the important component responsible for the negative surface charge, as determined by the use of neuraminidase. Thus, it is possible to use the mean electrophoretic mobility as an indicator for identifying amastigotes of T. cruzi.lld:pubmed
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pubmed-article:3881268pubmed:articleTitleTrypanosoma cruzi: surface charge and freeze-fracture of amastigotes.lld:pubmed
pubmed-article:3881268pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:3881268pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed
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